Keeley Psi Fuzz (PedalPCB Kinetic Fuzz)

[owlexifry]

Kinetic Fuzz - PedalPCB.com

Compare to Keeley Psi Fuzz

www.pedalpcb.com

- intentionally large layout for 1/2W size resistors and thicc caps
- unverified (build pending)

 

[JohnnyCreepy]

IMO Ionosphere sucked, is this more worth building? If it is, I’ll verify your layout within couple weeks.

 

[owlexifry]

IMO Ionosphere sucked, is this more worth building?

i haven't tried the ionosphere, but looking at the schematic, it only has x2 gain stages, so i'm not surprised this was your experience.

regardless, i'm pretty impressed with this psi fuzz thing.

If it is, I’ll verify your layout within couple weeks.

i still need to double check this layout against the schematic when im fresh and not burnt out.
(wouldn't recommend building it just yet, unless you wanna check it yourself)

but once ive done that, ill be ordering the 1/2W resistors and fatties to make a start.

i can at least confirm that the 34-hole-wide board does indeed fit in a 1590BB2.

 

[owlexifry]

IMO Ionosphere sucked, is this more worth building? If it is, I’ll verify your layout within couple weeks.

well, i went over it again and i couldn't find any errors, so i'd say it's good to go.

attached version with components removed/layout of trace cuts and jumpers. (no changes to the initial layout above)

 

[JohnnyCreepy]

I’ll try to get on with it in next few days!

 

[owlexifry]

update:
there was x1 error in the previous layout.
(found out the hard way on this build attempt)


easy fix.
diagonal jumper isn't ideal, but it works so i'm happy.

now verified

confirmed 34 wide does fit well in a 1590BB/BB2, but it is tight.

(evidence)

 

[HamishR]

If you move the 15K and 22K resistors directly below the diagonal jumper (15K to the right one space and 22K to the left one space) and also swap the red and the green jumpers associated with them then you can move the cut at 16-I one space to the left and everything fits.

 

[owlexifry]

(15K to the right one space and 22K to the left one space) and also swap the red and the green jumpers associated with them

i like your suggestion, it's a good solution to avoid the diagonal, but unfortunately the 22K would then be immediately adjacent to/'rubbing' against' the 47K - which would be a technical foul - cos these 1/2W resistors kinda need to have an empty row/column between each one for enough clearance. (that 47R doesn't have this problem when the resistor body is positioned right next to the 10U)

 

[HamishR]

Oh I didn't realise they had to be 1/2W. Ignore me!